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Public Domain
Francis Miller - Public Domain
George Grantham Bain Collection (Library of Congress) - Public Domain
Yoichi R. Okamoto - Public Domain
original uploader - Public Domain
Barraud & Jerrard, Photographers - Public Domain
Unkwnown - Public Domain
Professor Bop - CC BY 2.0
Adelphi University - Public Domain
Engraving by Thomas Doney - Public Domain
Who-When-What Company - Public Domain
Lioneldecoster - CC BY-SA 3.0
unknown - Public Domain
Matzohboy - CC BY-SA 4.0
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Public Domain
Waterman, Alan Tower, 1892-1967
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Francis Miller - Public Domain
Manigault, Arthur Middleton, 1824-1886
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George Grantham Bain Collection (Library of Congress) - Public Domain
Pulitzer, Ralph, 1879-1939
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Yoichi R. Okamoto - Public Domain
Bunker, Ellsworth, 1894-1984
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Friendly, Fred W.
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Russell, Benjamin, 1804-1885
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Calles, Plutarco Elías, 1877-1945
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Wyatt, Robert
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Castrén, M. Alexander (Matthias Alexander), 1813-1852
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original uploader - Public Domain
Hjelt, Edv. (Edvard), 1855-1921
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Buffon, Georges-Louis Leclerc, comte de, 1707-1788
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Rose, Leonard
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Barraud & Jerrard, Photographers - Public Domain
Martin, Jacques-François, approximately 1794-1874
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Grousset, Paschal, 1844-1909
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Campigli, Massimo, 1895-1971
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Unkwnown - Public Domain
Dessoir, Max, 1867-1947
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Landis, Frederick, 1872-1934
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Professor Bop - CC BY 2.0
Wilder, Joe
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Adelphi University - Public Domain
Levermore, Charles H. (Charles Herbert), 1856-1927
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Public Domain
Belmont, August, 1813-1890
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Engraving by Thomas Doney - Public Domain
Fairfield, John, 1797-1847
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Who-When-What Company - Public Domain
Matthews, Claude, 1845-1898
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Perkin, William Henry, Sir, 1838-1907
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Tocqueville, Alexis de 1805-1859
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original uploader - Public Domain
Lindenthal, Gustav, 1850-1935
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Public Domain
King, P. J. Locke (Peter John Locke), 1811-1885
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Lioneldecoster - CC BY-SA 3.0
Mabon, Willie, 1925-1985
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unknown - Public Domain
Chadwick, George Whitefield
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Matzohboy - CC BY-SA 4.0
Garfield, Allen, 1939-....
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Berzelius, Jöns Jakob, friherre, 1779-1848